It appears that you might be experiencing a bug in the ASDM GUI not showing IPv6 hit counts correctly. Although you have tried a few earlier ASDM versions, I would recommend the following steps to ensure that you have covered all bases before concluding that it is indeed a bug:
1. Verify that you are running the latest and compatible ASA and ASDM versions. Sometimes, compatibility issues between ASA and ASDM versions can cause unexpected behavior. You can check the compatibility matrix here:
https://www.cisco.com/c/en/us/td/docs/security/asa/compatibility/asamatrx.html2. Clear your browser cache and restart the ASDM application. Web-based applications like ASDM can sometimes have caching issues, causing them not to display the latest information.
3. Check the ASDM logs for any errors or warnings related to IPv6 access rules. You can access the logs by going to View ) Logs in the ASDM application.
4. If possible, try accessing ASDM from another computer or browser to see if the problem persists.
If you have tried all the above steps and the issue persists, you might be dealing with a bug. In that case, I would recommend reporting the issue to Cisco TAC for further investigation. They might be able to provide you with a workaround or a fix in the future software updates.
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